Replace enum with NS_ENUM macro
Replace enum with NS_ENUM macro

sambame/Reachability,yangshuai930319/Reachability,so-ixc/Reachability,chengkaizone/Reachability,xingfukun/Reachability,qx/Reachability,webconnex/Reachability,sandyway/Reachability,AdLyft/Reachability,SampleLiao/Reachability,orta/Reachability,HSFGitHub/Reachability,mwkirk/Reachability,yimouleng/Reachability,sdonly/Reachability,webcrawler/Reachability,chewyong/MyCocoaPodsTest,SummerHF/Reachability,cnbin/Reachability,christophercotton/Reachability,iguchunhui/Reachability,tonymillion/Reachability,yaoxiaoyong/Reachability,ashfurrow/Reachability,jum/Reachability,809848367/Reachability,tringkishorekumar/Reachability,johnmyqin/Reachability,RobotsAndPencils/Reachability,liwangbest/Reachability,Phelthas/Reachability,wuchaofei/Reachability,albertbori/Reachability